locksmith-lessons.com is available but I don't like.
If I were you I would even consider a singular option -->
com is not available but .net is still there - locksmithlesson.net
But overall I think lock-smith-lessons.com is the way to go [out of what's available].

also, could you tell the average cpc your keyword has? Just out of curiousity because I'd like to know what people here think is a valuable keyword

lock-smith-lessons,cØm may be available, but the hyphens suggest they are 3 words, which doesn't fit the most exact searches. Also, some people claim google thinks too many hyphens in url equals spam potential. (I wouldn't agree at 2 hyphens yet)

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